前者包括水槽实验和琼脂模型实验。
The physical model experiments include the water-tank and agar model experiments.
前者包括意义的增加和减弱，后者包括褒义色彩和贬义色彩。
The former includes meaning increase and meaning decrease, and the latter, commendatory emotions and derogatory emotions.
前者包括生殖托的发生、精卵的排放及合子的发育与环境因子的关系。
The former includes the occurrence of receptacles, the liberation of sperms and eggs, and the relation between the development of zygotes and environmental factors.
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